Mercury F57Z-3B437-BA Front Axle Shaft

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To remove the front differential on 1991-1994 models, first raise the vehicle and then install jackstands. The driveshaft should be disconnected, brake calipers removed, tie-rod ends detached, and stabilizer bar taken out. The coil spring could be compressed with a floor jack, after which it can be removed and thereafter the shock absorber can be dismantled. Remove the radius arm including its bracket followed by the pivot bolt. While 1995 and later models only require loosening lug nuts to raise the vehicle and remove the wheel(s), caliper, and brake disc. Disconnect the ABS sensor, remove the hub drive axle/nut, and support the lower control arm. Remove the control arm balljoint nut plus stabilizer bar and pry the inner CV joint assembly. Press out the drive axle from the hub then disconnect the front driveshaft. Support the differential, remove mounting bolts, and pull out axle. Put in new circlip, grease differential seal lips before inserting stub shafts. Do not forget to tighten all bolts/nuts properly!

Remove the hub lock (if equipped) as described in Section 13. Note that many later model 4WD vehicles do not have front locking hubs, so this step may not apply.

Unbolt the brake line junction block from the axle housing and detach the brake lines from the clips on the axle housing. Disconnect the rear anti-lock electrical connector from the sensor on the axle housing.

Jack the axle up off the spring and move it toward the passenger side of the vehicle until the driver's side end of the axle shaft clears the spring.

Install the splash shield and the spindle on the steering knuckle, then install and tighten the spindle nuts to the specified torque.

Remove the bearing and oil seal with a slide hammer and puller attachment.

A thorough check should be performed before assuming a rear axle problem because many times a problem suspected in the rear axle area may actually lie elsewhere.

Tighten the bolts in a criss-cross pattern to the specified torque.

The axle identification number is important for undertaking certain operations, particularly the replacement of the axleshafts. It is located on a small metal tag near one of the cover bolts.

Use a prybar or slide hammer with a CV joint adapter to pry the inner CV joint assembly from the front differential. Be careful not to damage the front differential and suspend the axle with a piece of wire.

For spindle bearing and oil seal replacement, the spindle is placed in a vise, and the bearing and oil seal are removed with a slide hammer and puller attachment. This may be necessary due to wear or damage, and the replacement ensures proper functionality.

After securing the vehicle on jackstands, the rear wheels, rear spare wheel/tire, axleshafts, and the rear of the driveshaft need to be removed. These components must be removed to access and detach the axle housing from the vehicle.

The initial steps involve loosening the lug nuts, raising the front of the vehicle, and securely supporting it on jackstands. These steps create a safe working environment and provide access to the front wheels for further disassembly.

A thorough check should be performed as the issue may lie elsewhere.

The final steps involve reinstalling the cover and bolts, applying a continuous bead of silicone sealant, and tightening the bolts in a criss-cross pattern. It is crucial to refill the axle with the correct lubricant to ensure proper functioning and longevity of the rear axle components.

The initial steps involve loosening the lug nuts on the rear wheels and then raising the rear of the vehicle, securely supporting it on jackstands. These steps are important to provide a stable and safe working environment for the axleshaft removal process.

For spindle bearing and oil seal replacement, the spindle is placed in a vise, and the bearing and oil seal are removed with a slide hammer and puller attachment. This may be necessary due to wear or damage, and the replacement ensures proper functionality.

The initial step is loosening the lug nuts on the rear wheels. This step is necessary to facilitate the removal of the wheels during the axle removal process.

The differential carrier is a casting with a pressed-steel cover.

For axleshaft assembly universal joint replacement, the internal snap-rings are removed, and subsequent steps are similar to those for driveshaft universal joints. The universal joint might need replacement due to wear or damage.

The front driveshaft and front axle vent hose are disconnected from the front differential during the removal process.